My presence at the capital was evidently necessary. A manner of association for utilizing the discoveries of the first Expedition had been formed in London by the Messieurs Vignolles, who knew only the scattered and unofficial notices; issued, without my privity, by English and continental journals. Their representative, General Nuthall, formerly of the Madras army, had twice visited Cairo, in August and October, 1877, seeking a concession of the mines, and offering conditions which were perfectly unacceptable. The Viceroy was to allow, contrary to convention, the free importation of all machinery; to supply guards, who were not wanted; and, in fact, to guarantee the safety of the workmen, who were perfectly safe. In return, ten per cent. on net profits, fifteen being the royalty of the Suez Canal, was the magnificent inducement offered to the viceregal convoitise. I could not help noting, by no means silently, this noble illustration of the principle embodied in Sic vos non vobis. I was to share in the common fate of originators, discoverers, and inventors: the find was mine, the profits were to go--elsewhere. General Nuthall professed inability to regard the matter in that light; while to all others it appeared in no other. However, after a few friendly meetings, the representative left Egypt, with the understanding that possibly we might work together when the exploration should have been completed. His Highness, who had verbally promised me either the concession or four per cent. on gross produce, acted en prince, simply remarking that the affair was in my hands, and that he would not interfere with me. I must not trouble the reader with the tedious tale of the pains and the labour which accompany the accouchement of such an Expedition. All practicals know that to organize a movement of sixty men is not less troublesome--indeed, rather more so--than if it numbered six hundred or six thousand. The Viceroy had wisely determined that we should not only carry out the work of discovery by tracing the precious metals to their source; but, also, that we should bring back specimens weighing tons enough for assay and analysis, quantitive and qualitive, in London and Paris. Consequently, miners and mining apparatus were wanted, with all the materials for quarrying and blasting: my spirit sighed for dynamite, but experiments at Trieste had shown it to be too dangerous. The party was to consist of an escort numbering twenty-five Súdán soldiers of the Line, negroes liberated some two years ago; a few Ma'danjiyyah ("mine-men"), and thirty Haggárah ("stone-men" or quarrymen).